A short but important river with a spectacular source.
The Afon Llwchwr or River Loughor rises within sight of Carreg Cennen Castle in the far west of the Geopark. It emerges fully formed at the dramatic resurgence known as Llygad Llwchwr – the ‘eye of the Loughor’.
Large quantities of pure water emerge here from a cave system, the extent of which is not fully known although surface water entering the ground at Sinc-ger-y-ffordd (literally the ‘sink by the road’) beside the A4069 several kilometres to the east are known to make their way to this point.
The infant Llwchwr leaves the Geopark at Dre-fach but continues to Ammanford where it is joined by the Amman before making its way to the sea at Loughor.